HVAC systems over 15 years old fail at double the repair rate of newer units

https://sacramentoprecisionhvacrepair-pros-near-westacre-park6826.lumenforgex.com/posts/no-cool-or-no-heat-diagnostic-triage-determines-your-service-call-cost-immediately

The frequency of HVAC servicing depends on your system's age and documented failure-rate metrics